release(v4.8.7): Issue #17 follow-ups - archive the review reports and bump the lockstep version

Merge-workspace review loop (--all-reviewer): round 1 (@8241bd5) claude
grok PASS, agy NOT PASS (two static wrapper-literal tests did not follow
_decided/_exit_for), codex NOT PASS (R1: a yes/no decision that could not
run read as "no"); fixed in 541c3fe and 65b78b6. Round 2 (@65b78b6) 4/4
PASS. Full suite at 65b78b6 on macOS / Python 3.9 / herdr 0.9.3: 1730
passed / 0 failed / 56 skipped; 18 of the skips were the uninitialized
nats-docker submodule in the fresh worktree, and with it
tests/test_deploy_freshness.py is 31 passed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

.agents/skills/multi-agent-mux-monitor/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: multi-agent-mux-monitor
 description: "Run a long-lived reconciler that watches .mam/agent-sessions.yaml against the actual herdr/agent runtime state and reconciles them. Use when you want live visibility into which agent sessions are running, which are dead, which have stale YAML entries, and which have new session ids that haven't been recorded yet. Runs as a persistent loop (`reconcile.sh --subscribe`) that keeps going until it times out, idles out, or is interrupted."
-version: 4.8.6
+version: 4.8.7
 author: godopu
 license: MIT
 platforms: [linux, macos]